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<div class="titlepage"><div><div><h5 class="title">
<a name="boost_asio.reference.ip__basic_resolver_query.basic_resolver_query.overload4"></a><a class="link" href="overload4.html" title="ip::basic_resolver_query::basic_resolver_query (4 of 4 overloads)">ip::basic_resolver_query::basic_resolver_query
          (4 of 4 overloads)</a>
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<p>
            Construct with specified host name and service name for a given protocol.
          </p>
<pre class="programlisting">basic_resolver_query(
    const protocol_type &amp; protocol,
    const std::string &amp; host,
    const std::string &amp; service,
    resolver_query_base::flags resolve_flags = address_configured);
</pre>
<p>
            This constructor is typically used to perform name resolution for communication
            with remote hosts.
          </p>
<h6>
<a name="boost_asio.reference.ip__basic_resolver_query.basic_resolver_query.overload4.h0"></a>
            <span class="phrase"><a name="boost_asio.reference.ip__basic_resolver_query.basic_resolver_query.overload4.parameters"></a></span><a class="link" href="overload4.html#boost_asio.reference.ip__basic_resolver_query.basic_resolver_query.overload4.parameters">Parameters</a>
          </h6>
<div class="variablelist">
<p class="title"><b></b></p>
<dl class="variablelist">
<dt><span class="term">protocol</span></dt>
<dd><p>
                  A protocol object, normally representing either the IPv4 or IPv6
                  version of an internet protocol.
                </p></dd>
<dt><span class="term">host</span></dt>
<dd><p>
                  A string identifying a location. May be a descriptive name or a
                  numeric address string. If an empty string and the passive flag
                  has been specified, the resolved endpoints are suitable for local
                  service binding. If an empty string and passive is not specified,
                  the resolved endpoints will use the loopback address.
                </p></dd>
<dt><span class="term">service</span></dt>
<dd><p>
                  A string identifying the requested service. This may be a descriptive
                  name or a numeric string corresponding to a port number. May be
                  an empty string, in which case all resolved endpoints will have
                  a port number of 0.
                </p></dd>
<dt><span class="term">resolve_flags</span></dt>
<dd><p>
                  A set of flags that determine how name resolution should be performed.
                  The default flags are suitable for communication with remote hosts.
                </p></dd>
</dl>
</div>
<h6>
<a name="boost_asio.reference.ip__basic_resolver_query.basic_resolver_query.overload4.h1"></a>
            <span class="phrase"><a name="boost_asio.reference.ip__basic_resolver_query.basic_resolver_query.overload4.remarks"></a></span><a class="link" href="overload4.html#boost_asio.reference.ip__basic_resolver_query.basic_resolver_query.overload4.remarks">Remarks</a>
          </h6>
<p>
            On POSIX systems, host names may be locally defined in the file <code class="computeroutput">/etc/hosts</code>.
            On Windows, host names may be defined in the file <code class="computeroutput">c:\windows\system32\drivers\etc\hosts</code>.
            Remote host name resolution is performed using DNS. Operating systems
            may use additional locations when resolving host names (such as NETBIOS
            names on Windows).
          </p>
<p>
            On POSIX systems, service names are typically defined in the file <code class="computeroutput">/etc/services</code>.
            On Windows, service names may be found in the file <code class="computeroutput">c:\windows\system32\drivers\etc\services</code>.
            Operating systems may use additional locations when resolving service
            names.
          </p>
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<td align="right"><div class="copyright-footer">Copyright © 2003-2021 Christopher
      M. Kohlhoff<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
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